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Short Term Borrowings (Tables) | 6 Months Ended
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Jun. 30, 2013
Debt Disclosure [Abstract] |
Schedule of weighted average daily amounts of borrowings outstanding under credit lines and the weighted average interest rates | The weighted average daily amounts of borrowings outstanding under the Company’s credit lines and the weighted average interest rates on those amounts were as follows:
|  | (In Thousands)
|  | Three Months Ended |  | Six Months Ended
|  | June 30, |  | June 30,
|  | 2013 |  | 2012 |  | 2013 |  | 2012
Average Daily Amounts Outstanding |  | $ | 25,873 |  |  | $ | 24,635 |  |  | $ | 26,895 |  |  | $ | 24,102 |
Weighted Average Interest Rates |  |  | 1.34% |  |  |  | 1.38% |  |  |  | 1.37% |  |  |  | 1.35% |

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